Tian Ji: the six-rung ladder
Content version · · Sources & references
Tian Ji is Wood and always sits one step before Zi Wei. Its grades in the Quan Shu table form six rungs, opposite palaces sharing one; with Tai Yin, Ju Men and Tian Liang as co-residents, here is how to read it.
The short version7 min read
Tian Ji is the second star of the Zi Wei sequence and always sits one place before Zi Wei; its grades in the Quan Shu table come in opposite pairs, and the star sharing its palace is only ever Tai Yin, Ju Men or Tian Liang.
- Once you know the branch of Tian Ji, Zi Wei is on the next branch and every major-star position on the chart follows.
- Tian Ji has only six grade rungs, opposite palaces sharing each, and Tiger and Monkey still differ because the co-resident Tai Yin does.
- The book's two words "strong" and "weak" face only Miao/Wang and the sunken position; name the table and the branch when you cite them.

Read first
The fourteen major stars: learn the roster and its structure ↗
Six rungs, not twelve
Tian Ji (天機) is the second star of the Zi Wei sequence, and it always sits one place before Zi Wei. The Miao/Wang table printed in the second juan of Zi Wei Dou Shu Quan Shu (紫微斗數全書) grades it in opposite pairs of branches, so twelve positions make only six rungs.
Ladder sketch: grades are the juan 2 Miao/Wang table, which iztro 2.6.0 matches on these twelve cells; co-residents come from the placement verse.
Reading from the top: Rat and Horse are Miao (廟), Rabbit and Rooster Wang (旺), Tiger and Monkey De (得地), Dragon and Dog Li (利益), Snake and Pig Ping (平和), and Ox and Goat Xian (落陷). Beside each rung is the other major star in the palace: Ju Men (巨門) on Rabbit and Rooster, Tai Yin (太陰) on Tiger and Monkey, Tian Liang (天梁) on Dragon and Dog, and Tian Ji alone on the remaining three. The star table of iztro 2.6.0 agrees with the book on all twelve cells.
Tiger and Monkey share one rung; the co-resident tells them apart
Tian Ji has only three possible co-residents: Tai Yin on Tiger and Monkey, Ju Men on Rabbit and Rooster, Tian Liang on Dragon and Dog, while the six positions Rat, Horse, Snake, Pig, Ox and Goat are solitary. The Tian Ji entry in juan 2 writes exactly these three pairs ("Rabbit and Rooster, Wang, with Ju Men; Tiger and Monkey, De, with Tai Yin; Dragon and Dog, Li, with Tian Liang"), which matches the computed layout above.
Bring in the grades of the co-resident from the same table and the three pairs look like this:
Enlarge diagram · scroll sideways to read
Only the Tiger/Monkey pair is pulled apart by the co-resident: Tai Yin is Wang at Tiger and only Li at Monkey. Ju Men on Rabbit and Rooster is Miao on both, and Tian Liang on Dragon and Dog is Miao on both, so even the partner cannot separate the two positions. To tell them apart you have to leave this table: which branch holds the Life palace of the chart, what this position is called, and who stands in its three-sides-four-directions.
What the book writes in Tian Ji's columns
Juan 1 opens its answer to "what does Tian Ji govern" with this sentence:
Tian Ji is Wood, the third star of the Southern Dipper, a good star that adds to reckoning. Its qi later turns to "goodness"
The catalog in juan 2 gives the same star as "Tian Ji, Wood, Southern Dipper, turns into goodness, ruler of the Siblings palace". Four items sit side by side: Wood, third star of the Southern Dipper (南斗), the qi title "goodness" (化善), and a pairing with the Siblings palace. The engine behind the site charts, iztro 2.6.0, records Wood and Yin in its star table and leaves out the Dipper and the palace pairing.
Enlarge diagram · scroll sideways to read
Master Yuchan in juan 1 compresses grades into two words:
In Miao and Wang it has strength; in a sunken place it has none.
The table has seven grades and this sentence touches only the two ends. Which side De, Li and Ping fall on, it does not say, and there is no need to supply that for it. Juan 2 also holds a list headed "stars falling into idle palaces", and Tian Ji is written there at one position only: Snake. In the grade table Snake reads Ping, which is the second rung from the bottom of the ladder.
From one Tian Ji to the whole chart
The placement verse "Zi Wei, Tian Ji, going the reverse way beside it" means that stepping back one branch from Zi Wei gives Tian Ji. Turned around, one branch after Tian Ji is Zi Wei. With Tian Ji known, all fourteen major-star positions can be worked out. The six pairs of positions run through like this:
| Tian Ji at | Zi Wei at | Co-resident | Tian Ji grade |
|---|---|---|---|
| Rat / Horse | Ox / Goat | none | Miao |
| Ox / Goat | Tiger / Monkey | none | Xian |
| Tiger / Monkey | Rabbit / Rooster | Tai Yin | De |
| Rabbit / Rooster | Dragon / Dog | Ju Men | Wang |
| Dragon / Dog | Snake / Pig | Tian Liang | Li |
| Snake / Pig | Horse / Rat | none | Ping |
Enlarge diagram · scroll sideways to read
Two more small problems are worth trying. Tian Ji at Ox: Zi Wei at Tiger, the Ox position is Xian, and Tian Ji stands alone. Tian Ji at Tiger: Zi Wei at Rabbit, the co-resident is Tai Yin, Tian Ji is De and Tai Yin is Wang. On the chart with Tian Ji at Rooster the opposite Rabbit has no major star; how to borrow from the opposite palace in such a case is explained in empty palaces and borrowed stars.
Three moves for reading Tian Ji
Give the position, then the grade
Say "Tian Ji at Monkey, De in the juan 2 table": branch and source together let a reader return to the same cell.
Ask who else is in the palace
Only Tiger/Monkey, Rabbit/Rooster and Dragon/Dog come with a partner. Any other pairing on a chart suggests rechecking the birth data and settings used to cast it.
Past Tiger and Monkey, switch to palace names
If opposite positions carry one grade, ask which branch holds the Life palace and what this position is called.
Two exercises
Tian Ji at Goat: where is Zi Wei, and what does the Goat position read?
Zi Wei is at Monkey, one branch after Goat; Goat is Xian and Tian Ji is alone.
Tian Ji at Monkey: who shares the palace, and what do the two stars read?
Tai Yin shares it; Tian Ji is De and Tai Yin is Li.
Zi Wei sits one place after Tian Ji, so Zi Wei and its twelve landing points is the natural companion piece; next in the six-star order comes Tai Yang.
Questions readers ask next
If Tian Ji lands on Ox or Goat, is it simply weak?
In the grade table, Ox and Goat are Tian Ji's lowest grade, Xian, and Tian Ji sits alone on both. The table answers only "what grade does this position carry"; the palace name, neighboring stars and transformations come from elsewhere, and "simply weak" is a casual summary the book does not make.
With Tian Ji and Tai Yin together, do Tiger and Monkey differ?
Tian Ji itself is De on both, but Tai Yin is Wang at Tiger and Li at Monkey. One pair of stars on two positions gets different grades in the Tai Yin column; which palaces the two positions are depends on the Life-palace branch of that chart.
Why is Tian Ji said to sit right beside Zi Wei?
The placement verse reads "Zi Wei, Tian Ji, going the reverse way beside it": step back one branch from Zi Wei and you are at Tian Ji. That spacing is fixed in the verse and does not change with birth data, so one position gives you the other.
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Sources & references
Continue reading
Zi Wei (紫微): Twelve Landing Points, Six Co-residents, and How to Read "Meeting Po Jun" ↗
Tai Yang (太陽): Twelve Positions as One Day, Beside the Grade Table ↗


